Finding the Fourth Proportional to 135.54, 203.30 and 84.14
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Solution
The fourth proportional to 135.54, 203.30 and 84.14 is: 126.20
Step by Step Solution
- Step 1: Write the proportion equation
135.54 : 203.30 = 84.14 : x - Step 2: Convert to fraction form
135.54/203.30 = 84.14/x - Step 3: Cross multiply
135.54x = 203.30 × 84.14 - Step 4: Simplify right side
135.54x = 17,105.24 - Step 5: Solve for x
x = 17,105.24/135.54 - Step 6: Final answer
x = 126.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.